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sebastien
Joined: 07 Aug 2018 Posts: 70 City/Region: philadelphia
State or Province: PA
C-Dory Year: 2000
C-Dory Model: 22 Cruiser
Vessel Name: kittiwake
Photos: Kittiwake
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Posted: Sun Oct 27, 2019 2:51 pm Post subject: |
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"Unique to Engel this purpose built compressor is designed to be a portable refrigeration compressor and is one of the key reasons why ENGEL is 'A LEGEND IN RELIABILITY'. The Sawafuji Swing Motor is a true reciprocating compressor; it has only one moving part.
"The piston is connected to an electro dynamic device which is powered by the use of magnetic
fields. With this technology there is no need for bearings, cranks or con-rods, so less moving parts means
less chance of failure. With only one moving part there is a very low friction loss which means this is a highly
efficient compressor.
It has no high start up current draw because when it starts up it can simply move down just a fraction then
return. Then it slowly increases the distance the piston travels each stroke until it reaches a full stroke. The
Sawafuji Swing Motor does not need to perform a full stroke on start up unlike many rotary type compressors
that must perform a complete cycle and need much more current to start.
http://www.marinewarehouse.net/images/engel/Technical-factsheet.pdf _________________ sebastien |
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thataway
Joined: 02 Nov 2003 Posts: 20779 City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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Posted: Sun Oct 27, 2019 4:48 pm Post subject: |
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Ron on Meander wrote: | Very interesting series of videos of comparison of Sno-Master, ARB, Engel and Waeco fridge/freezers.
Ron |
Thanks Ron from bringing up this very recent series of 7 "episodes". I watched them all (Ok I did fast forward some introductions). Lengthy and interesting. What was not clear to me, was if the units were kept together on the one table, or were tested separately. Instructions for any of these say to allow a sufficient space between the unit and walls--4" is a minim. Also most of the tests were with a single small water bottle in the refrigerate and running at the lowest temps (about -4* F--their temps were in C). Realistically we run our refrigerator at 35* and the freezer at 16* with our temperature transducers in the middle of the chests. The below is a photo as we were taking the food out at the end of the trip, so freezer is up a bit:
Their conclusion was that the "Snomaster" was the "best". This is a Chinese copy of the National Luna, from South Africa which has been highly rated for a number of years. National Luna seems to be carried by a number of outfitters in the USA, and are not that much more costly than the "Snomaster." Looking at the data and the video series there are some inconsistencies--which they could not explain.
Does the Engle really use that much less power than the others? The short term tests, including 12 hours suggested it used less, yet on the 24 hours it used more than others. The least was the ARB....at 24 hours, but in the short term it seemed to use equal to the Dometic (Waeco).
Bottom line was that they all seemed to use about 30 amp hours in 24 hours when not opened and in a air conditioned environment. Realistically, one should plan for 60 amp hours usable, because of ambient temps, opening and closing, adding warm items to the units would close to double the consumption. They also approached the issue of batteries, and touched on use of LiFePO4 batteries... _________________ Bob Austin
Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
KA6PKB
Home port: Pensacola FL |
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